The vortex is essentially an area of low pressure in the upper layers of the atmosphere over the polar region. This vortex ...

Kansas City Airport closes amid a severe winter storm and polar vortex, causing major travel disruptions across the Midwest.

The polar vortex set to hammer much of the country with extreme winter weather this week is expected to spare Santa Fe from the snowfall — but not from the low temperatures or high winds. Starting ...

A polar vortex is set to bring freezing temperatures to much of the country over the next week. Here's what you need to do to ...

Bitter temperatures are forecast to hit swathes of the U.S. this weekend as a polar vortex—the area of cold air that ...

A polar vortex with the potential to damage Florida's seasonal citrus crop is expected to descend on the state next week -- ...

Or, you know, maybe just wear a sweater and long pants. You never can tell with Texas weather.

Storm Blair is set to move across the Plains, Midwest and mid-Atlantic with damaging ice, heavy snow and travel concerns. On ...